fiegel



W. l. FIEGEL.

MOLDING MACHINE.

APPLlcmou man MAY la. 191s.

Patented Sept. 2, 1919.

3 SHEETS-SH EET I.

W. l. FIEGEL.

MOLDWG MACHINE.

APPLICATION min nula. ma.

1,314,954. Patented sept. 2, 1919.

3 SHEETS-SHEET 2.

ammo/r.

W. l. FIEGEL.

MOLDING MACHINE.

APILICAHOM FILED *AY I3. |918.

'Patented Sept. 2, 1919.

l 3 SHEETS-SHEET 3.

am S

UNITED STATES PATENT OFFICE.

WILLIAM J. FIEGEL, 0F DETROIT, MICHIGAN, ASSIGNOR TO GENERAL ALUMINUM & BRASS MFG. COMPANY, 0F DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

nonnina-MACHINE.

Application led May 13.

To all whom it may concern:

Be it known that I, WILLIAM J. FmcnL, a citizen of the United States of America, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Mold ing-Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to molding machines of that type adapted especially for use in forming one-part molds for test bars. It is secure a. casting having this constructie without the necessity of performing a Inachining operation. One of the objects o the invention is to obtain a construction for, forming a cavity in a one-part mold having.V a portion throughout its length of constant.;- Another object is to engaged by the slide blocks E and E respeccl'osssectional area. obtain a construction in which there is a pattern and a slick both of which are adapted to alternatively register in the same position and when in this position, are adapted to be moved by the same member. A further object is to provide means for preventingI the rotating of the member carrying the pattern and slick when the pattern or slick are in various positions of adjustment and also for preventing movement of the arm for adjusting the pattern and slick when the member carrying the same is being rotated. A still further object is to provide means for guiding the slides upon which the pattern and slick are mounted, While their carrying member is being rotated. Other objects of the invention reside in other advantages and further in the nove-l arrangements and com binations of parts as more fully hereinafter set forth.

In the drawings:

Figure 1 is a sectional side elevation of a molding machine embodyin my invention;

Fig. 2 is a similar view s owing the segmental arm carrying the pattern and slick in its adjusted position;

Fig. 3 is a longitudinally central View of the mold with the pattern thereWithin;

Fig. L is a similar view With the slick therewithin Fig. 5 is a sectional View on the line 5--5 of Fig. 2;

Specification of Letters Patent.

Patented Sept. 2, 1919.

191B. serial No. 234,246.

Fig. 6 is a similar view on the line 6 6 of Fig. 1.

A is the housing of the molding machine, preferably of segmental shape and having a front plate not shown) removably secured thereto, permitting of the insertion of the mechanism. Mounted centrally of the top of the housing and secured thereto is the depending casing A extending in to the 'housing This casing is conical-Shaped and fopen at its upper end for receiving t ie mold Y n QB and its conical-shaped shell B slidably necessary to secure test-'bars havlng a por-jengageable with the casin tion intermediate its ends of constant crosssectional area and it is highly desirable to' The base A2 of the casing has the central y located aperture X3 therein, through which tools, hereinafter -lescribed, are adapted to pass. Embracing he easing A is the bifurcated arm C pivted thereto on opposite sides at C. The radially extending arms D and D are fixedly secured to the bifurcated arm C, pref erably at right angles to each other and have the adjustable parallel bearings D2 slidably Itively. F is a rock arm pivoted to the side of the housin A at F and non-rotatably secured to the land lever F2 outside of the housing (shown in dotted lines). F3 is a link pivotally connecting the rock arm F to the bifurcated arm C. To axially aline the slide blocks E and E with the casing A so that the tools carried thereby, hereinafter described, will accurately enter the aperture A3 in the bottom of the easing the yoke G is provided, comprising the levers G and G2 pivotcd to the bottom of the housing A at i". The lever G2 has the recess H in its upper edge for alternative engagement with the projections E2 upon the outer ends of the slide blocks and is normally forced upf ward into position to engage the pro ections by means of the coil spring H'. The stop H2 limits the upward movement of the lever G2. Pivotally connected to the other lever G of the yoke is the push rod I having the push button I above the to of the housing A. J is a rock arm pivote to the opposite side of the housing A at `J and non-rotatably secured to the hand lever J2 outside of the housing (shown in dotted lines). J3 is an inwardly and transversely-extending pin at the end of the rock arm J and moves substantiallyvertically through an arc upon rotation of the roclcarm J. The slide blocks E and E have the transverse grooves E in their outer surfaces adapted to be cngagcd by the roller J 1 upon the pin J, the arrangement being such that the necessary transverse travel of the roller with respect to the slide hiocks is permitted while the roller is movin through its substantially vertically extending are. For the purpose of main-taining the slide blocks` at all times in operative relation so that the grooves E therein will positively register with the roller J 4 when the bifuroated arm C is rotatcd both the slide blocks and the roller are engaged by guides. In detail, K is a segmental guide secured to the housing A and concentric with the pivot C', this guide adapted to enter the channel E in the slide 'block E'. K is a corresponding segmental guide secured to the hens-1n A und adapted to enter the channel E3 in t ie slide block E. These segmental guides have their lower adjacent ends spaced from each other for the roller J. This roller is normally held in registration with the guidesy K and K by meansI of the depending arm K2 upon the rock arm J engaging the bottom of the hous ing A. This roller is also held in registration with the guides K and K' during rotation of the bifureated arm C by means of the segmental member L secured to the radial arms D and D and the bifurcated arm C and having the circular channel L concentric with and en ageable with either circular guide K, K. pon rotating the segmental member the channel L' engages the roller J4 and positively retains the same in place to be engaged with the channel in either block near the end of rotation of the bifurcated arm. The segmental member also reinforces the radial arms Dand D'.

lV ith the above construction it is readily seen that the rock-arm J can not be rotated when the rock-arm F is in an intermediate position of adjustment. In order to prevent the rotation of the rock-arm F when the rock-arm J is in an position of adjustment, the se ental memy er L has the outwardlyexten ing anges M and M', each curved to be concentric with the pvot J of the rockarm J and adapted to be engaged by the pin J2 of the rock-arm u on rotation of the latter when the slide b ocks E and E' are respectively in alinement with the aperture A2 in the easing A. These flanges M and M' are upon sides of the roller opposite those to which the bifurcated arm would be adwith will not engage and Wear the wall of the aperture upon engaging therein. The upward movement, ol the slide block ll is limited by the enga ement of the shoulder N* with the bottom 2 of the easing.

For retaining the nu'tern within the casing A the block l] has the lateral lugl ll adapted to be engaged in its upper adjusted position 'by the rock arm O pivoted at O to the segmental member L and having the )ortion O2 normally in. the path oi' travel o the push-rod O3 with the push butt/on O* above the top of the housing A. The coil spring O5 normally tends to swing the rock arm (l into engagement with the lateral lug E4.

When the pattern is locked Within the Casing A. the floating slick P, having the axial bore P for engaging the pin N3, is mounted on the pattern N. This floating slick has the cylindrical base portion P2 of the saine diameter as the base N and the cylindrical portion l)3 of the same diameter as N2. In order to longitudinally withdraw the pattern and floating slick, their different portions` have slight tapers. The mold B is formed by putting green sand or other suitable nia-- terial into the shell B previously placed in the casing A and slightly tamping the sand down and leveling oli'. The pattern and slick are of a combined length such that the top of the slick is Hush with the level of the sand. The pattern is then removed longitudinally by moving the slide block E downward and the cavity Q is formed having the intermediate tapering portion Q.

A very important feature of my invention relates to the following construction for securing uniform cross-sectional area of the tapering portion Q of the cavity. As shown, the tool mounted upon the slide block E is the slick Q2, which is annular and has rounded opposite ends. This slick is freely mounted upon the stem R in turn secured in the slide block E and the stem has a base R' and a reduced portion R2 corresponding t0 the base and reduced portions of the pattern but of'slightly smaller diameter. The greatest diameter of the slick Q2 is equal to the greatest diameter of the tapering portion Q' of the cavity in the mold and is greater than the diameter of the reduced portion R2 of the stem.

For the purpose of rotating the slick Q2 the following construction is provided: The stem R is hollow and is engaged by the spindie S which has at its lower end the spiral S engaged by the pin S2 mounted in the arm D. In order to rotate the slick Q2 only when in engagement with the walls of the mold cavity Q, the pin S2 is held in longitudmal sliding engagement with the slot S3 by means of the coil spring S* connected to the 'pin and bifurcated arm C. To make the slick Q2 self-centering, 4the stem T extends axially up through the slick and is'frctionall y engaged at its lower end by the reduced portion R2 of the stem R and at its upper end by the stop T. Located between the stop T and the upper or inner end of the stem R is the slick Q2 which is rotatably connected to the stop T' by the universal joint connection T2. Y i

For the purpose of readily VreiHoving`the floating slick P from the mold B the'stop T" is adapted to engage the lower or inner end of the floating siick and to force the latter longitudinally outward a suflicient distance to be grasped by the operator. The outward movement of the stop T and of course the rotating slick Q2 is limited by the shoulder V upon the slide block E Contactin with the bottom A2 of the casin A. Su cient movement is permitted for t e rotating slick to moveV longitudinally of the reduced portion Q of the cavity for its Vcomplete length, thereby smoothing the joint formed between the pattern and iioating slick and making the same of uniform diameter.

In order to remove the complete mold from the casing, the latter' is provided with the bore U extending from the bottom of its side Wall to a point near the top thereof. The side wall has the slot U2 at its bottom in the plane of the bore U and extendin completely through the wali. VThe side wal also has the slot Us in the plane of the bore U and connecting from the outside of the side wall into the bore. The flange` plate V slidably engages the slot U2 and has the lateral shoulder V normally flush with the bottom of the mold B and adjacent to the bottom of the shell B. provided slidably engaging the bore U and secured to the flat plate V. This rod issecured to the transversely extending rod W, which extends throuV h the slot Us Yand is connected to the han V-lever W outsideV the housing A and at the front thereof. The lateral shoulder V of the iiat plate V will engage the bottom of the shell B upon raising the rod V2 by means of the hand-lever W', thereby raising the shell a sufficient distance to be grasped bythe operator so that the mold can be removed.

In operation, the parts are normally in the position, as'shown in Fig. 1, in which the pattern N is in axial alinement with the casing A for receiving the mold. The pat,- tern is raised by means of rotating the roekarin J and when within the casing A', is locked in position by means of the rockarm O engaging the lug E* upon the slideblock E. The floating slick P is then placed upon the pattern, the shell B placed within the casing A and green sand or other material tamped into the shell and around the pattern and iinally leveled oii".A The pattern is then removed from the mold B'by The rod V2 is' releasing the rock-arm O from the lug E* through the push button O4 and by returning the rock-arm J to its original position.

The next Step comprises the rotating of the arms D and D carrying the slide blocks for `the pattern and slick to the positions as shown in F ig. 2, and is accomplished by first releasing the projectionE2 upon the lower or outer end u on the siide block E from the lever G2 an then rocking the rock arm F connected to the bifurcated arm C carrying these arms D `and D. During rotation, the circular guide K guides the slide block E and the circular guide 'K' guides the slide block E. Also the circular channel L retains the roller J* upon the rock-arm J in registration with the guides K and K so that the channel E in the slide block E is engaged by 'the roller J 1 upon sufficient rock-- ing movement oi" the bifurcated arm C.

The recess H in the lever G2 will yieldably engage the projection E2 upon the slide block E when the latter has been rotated a suii'icient distance, thereby alining the slide block E axially of the casing A. The slick Q2 carried by the slide block E is then raised into engagement with the tupering wall of the reduced portion Q of the cavity Q in the mold. This is done by the roller J4 engaging the slide block E to raise the same` which correspondingly raises the pin S2 engaging the spiral S connected to the slick Q2 until the pin engages the upper end of the slots S3 inthe arm D', when upon further movement of the slide block E the spiral moves relative to the pin and is thereby rotated. The slick Q2 having fapered opposite'ends and being connected by a universal joint connection will center itscli in passinglongitudinally through the reduced portion Q. of the cavity.

1.Vhen near the outer end of movement of the slide block lil. the stop T engages the iioating slick P and forces the same longitudinally outward to be grasped by the operator. The slide block E is then permitted to resume its lowermost position and the rock-arm J will also resume its original position.

While the rock-arm J is in any of its various positions of adjustment, the pin .l3 carrying the roller -I 4 engages either the laterally extending flange M or M' so that the bifurcated arm C, which carries the pattern and the slick, can not be rocked.

The slide block E' is now rotated to its original position by means of rocking the arm F and the mold B is removed from the casing A' by means of swinging the handlever W to raise the rod V2 and thereby raise the shell B through the flat plate V.

What I claim as rnv invention, is:

1. In a molding machine, the combination with'a pattern for form-ing a cavity in the mold, said cavity having a portion along its length of varying cross-sectional area, of means engageable Within said portion for forming the same with a constant crosssectional area... Y.

2. In a molding machine, the combination with a pattern having a tapering portion for forming a corresponding cavity in the mold, of a rotating slick slidably engageable With the tapering Wall of said cavity for its complete length to make the same cylindrical.

3. In a molding machine, the combination with a tapering pattern for forming; a corresponding' cavity in the mold, of a self-centering slick engageable with the wall ot said cavity, and means for moving said slick longitudinally thereof.

i. In a molding machine, the combination with n. tapering cylindrical pattern for forming a correspondingr cavity in the mold, of an annular self-centering slick engagenblo with the Wall of said cavity, moans for movingr said slick longitudinally Within said cavity and for rotating said slick, and means for rotating said slick While in engagement with the Wall of the cavity. Y

In a molding machine, the combination with a tapering cylindrical pattern for forming `a correspondingr cavity in the mold, of an annular self-centering slick engageable with the Wall of said cavity, means tor moving said slick longitudinally of said cavity, and `means for rotating said slick dependont upon its longitudinal movement. Y

G. In a molding` machine, the combination with a tapering cylindrical pattern for forming a corresponding cavity in the mold, of an annular slick engageable with the Wall of said cavity, a stem movable longitudinally within said cavity, a universal joint connection between said stem and annular slick, and means for rotating` said stem.

7, In a molding machine, the combination with a pattern and a floating Slick for forming a continuous cavity inthe mold, of a rotating slick longitudinally engageable With the Wall of said cavity, and means for removing said pattern and inserting said rotating slick, and means upon said Vslick for engaging said fioating slick to force the sanne longitudinally outward.

8. In a molding machine, the combination with a pattern and a slick adapted to alternatively register in the same position, of a common means for moving said pattern and slick when in said position.

9. In a molding machine, the combination with a casing for receiving the mold, of radial arms pivoted to said casing), slide blocks upon said arms, a pattern and a slick respectively upon said slide blocks and longitudinally' insertible into said casing, and

a, common lever for moving said pattern and Slide said casing. Y

1I. In aV moldin machine, the combination with a casing or receiving the mold, of a member pivoted to said casing, said member having yradially extendin arms, slides upon seid arms, a pattern anc a Slick HP0 f the respective slides, means for rotating said member, and means for guiding said slides nponretation thereO v 12,7111. e moldin machine, the orrltne-V tion with a casing: or receiving the mold, ot' a member embracing said casing and pivoted thereto, said member havin radially extending arms, slides upon sai arms, a pattern and a Slick lipon the respective slides, means for rotating said member, means for guiding said slides upon rotation of said member, and a common member for Vmoving Said' slides longitudinally of said arms and into said casing.

13. In a moldin machine, the combination with a casing or receiving the mold, of

a shell forming the outer casing` for said mold and fitting Within said casing, means for forming a cavity in the mold, means for withdrawing said formin means, and means for Vmoving said shell ongitudinally outvyard Vof said casing.` Y

14. In a molding machine, thecombination with a pattern forforining a cavity in the mold, of a slick slidsnly engageable Within said cavity, and means for removing said pattern ,and moving said slick into alinement with said cavity.

15. In a molding machine, the combination With a pattern for forming a cavity in the mold2 of a slick slidably engageable Within said cavity, means for moving said slick into alinement with said cavity, means for moving said slick into said cavity, and means'permitting Iof the separate operation of either moving means and preventing the simultaneous operation of both moving means.

16. In a ,molding machine, the combination with a casing for receiving the mold and a pattern, and a slick insertible into said casing, of means for alternatively insorting said pattern and slick, means for rotatingsaid vpattern and slick, and means for preventing the operation of said inserting means during operation of said rotating Emeans and for preventing operation of said rotating means during operation of said inserting means,

17. In a molding machine, the combination with a receptacle for the mold, of a member' pivoted thereto, arms upon said member, a pattern and a slick slidably engaging said arms and insertible Within Said receptacle, a rock-arm for moving said pattern and slick alternatively into said receptacle, means for rotating said pivoted member, and a melnber secured to said pivoted member and arms for reinforcing the same and provided with means engageable with said rock-arm during its movement upon the side opposite that to which the pivoted member could be rocked.

18. In a molding machine, the combination with a casing for receiving the mold, of a pattern and a slick insertible Within said mold, slide-blocks carrying said pattern and slick and adjustable parallel bear ings for engaging said slide-blocks.

19. In a molding machine, the combination With a receptacle for the mold, of a pattern longitudinally insertible into said mold, means for moving said pattern thereinto, automatically operating means for retaining said pattern therein, and means for releasing said retaining means.

Q0. In a molding machine, the combination with a pattern and a floating slick for forming a continuons cavity in the mold, of a slick longitudinally engageable with the Wall of said continuous cavity and adapted to smooth the joint in the mold formed by said pattern and floating slick.

21. In a molding machine, the combination with a casing for receiving the mold, of a pattern and a slick alternatively insertible into said casing, of a common means for moving said pattern and slick into said casing.

22. In a molding machine, the combination with a casing for receiving the mold, of a pattern and a slick alternatively insertible into said casing, members carrying said pattern and slick, a member common to said carrying members for moving said pattern and slick into said casin and guides for said carrying members Ior retaining the same in operative positions, said member for moving said pattern and slick into said casing normally being located between and in registration with said guides.

WILLIAM J. FIEGEL.

Copies of this patent may be obtained for live cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

